hello, mr.someguyfromcanada sir i said voice doesnot work but never tried in safe mode.and today i saw the reply from mr dave it is really very helpful i tries all thing as you said and chat room function was not good.means once enter after it was taking very time to open but mostly when i close the chat room and try to change than.but today after i reinstall it as mr dave said and now worked good but voice trouble still giving me problem.after i done all things and reboot my computer and than try it worked in any room but after some time same trouble.and if i do compatibility mode it will be windowxp service pack 2 so than yahoo wont open with ytk.it is work as administrator in windowxp service pack3.